This might also be useful for games which go full-screen and let the users use the arrow keys ( works with just FULL_SCREEN ).
If the user is viewing the app in full-screen and then wants to use an alternative control method with non-FULL_SCREEN allowed keys ( eg WASD ), then the app can detect this and then toggle from FULL_SCREEN to FULL_SCREEN_INTERACTIVE and prompt the user with the additional question to allow use of the keys.
From here, the user either accepts yes ( in which case the app remains full-screen, and the keys can be used - ie invisible swap to FULL_SCREEN_INTERACTIVE ), or it returns to the previous state ( FULL_SCREEN ).
Currently this doesn't seem to be possible to do - the user has to use the event to return to NORMAL windowed mode, and then have the user click again to prompt going into FULL_SCREEN_INTERACTIVE mode.
NORMAL -> FULL_SCREEN_INTERACTIVE : Possible
FULL_SCREEN -> FULL_SCREEN_INTERACTIVE: NOT Possible ( but should be )
